In 2021, Australia's RMIT helped Coles put 900,000 pieces of soft plastic into concrete. 1 year later, another Coles development was set to reuse 6.5 million pieces through Polyrok

Soft plastic such as wrappers, cling wrap and plastic bags has been difficult to recycle. RMIT University worked with Coles and Victorian recycling organisations to develop Polyrok, a plastic aggregate made from recycled soft plastics for use in concrete.

The material was first used commercially at a Coles car park in Horsham. A larger application was announced in February 2021 for a Coles supermarket development at Cobblebank in Melbourne, where more than 6.5 million pieces of soft plastic were set to be recycled through Polyrok.